12115618 has 8 divisors (see below), whose sum is σ = 18963648. Its totient is φ = 5794404.

The previous prime is 12115603. The next prime is 12115633. The reversal of 12115618 is 81651121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12115603) and next prime (12115633).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12115592 and 12115601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131646 + ... + 131737.

It is an arithmetic number, because the mean of its divisors is an integer number (2370456).

Almost surely, 2^12115618 is an apocalyptic number.

12115618 is a deficient number, since it is larger than the sum of its proper divisors (6848030).

12115618 is a wasteful number, since it uses less digits than its factorization.

12115618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263408.

The product of its digits is 480, while the sum is 25.

The square root of 12115618 is about 3480.7496319040. The cubic root of 12115618 is about 229.6757750474.

Adding to 12115618 its reverse (81651121), we get a palindrome (93766739).

The spelling of 12115618 in words is "twelve million, one hundred fifteen thousand, six hundred eighteen".